| Jurisdiction: | Diocese |
| Ourinhos | |
| Latin: | Dioecesis Parvauratana |
| Local: | Diocese de Ourinhos |
| Country: | Brazil |
| Rite: | Latin Rite |
| Established: | 30 December 1998 (years ago) |
| Cathedral: | Cathedral of the Good Lord Jesus in Ourinhos |
| Area Km2: | 6,713 |
| Population: | 294,610 |
| Population As Of: | 2004 |
| Catholics: | 147,305 |
| Catholics Percent: | 50.0 |
| Metro Archbishop: | Maurício Grotto de Camargo |
| Emeritus Bishops: | Salvatore Paruzzo |
The Roman Catholic Diocese of Ourinhos (la|Dioecesis Parvauratana) is a diocese located in the city of Ourinhos in the ecclesiastical province of Botucatu in Brazil.